Arrange the prawns and scallops on a plate in a steamer basket. Sprinkle with 1 tsp each orange juice and rice vinegar.
2
Place steamer over boiling water in a wok or large skillet and cover. Cook to 8 minutes until prawns are cooked through.
3
Meanwhile, stir together remaining orange juice, rice wine vinegar, sesame oil, mustard powder, salt and pepper in a medium bowl. Mix in spring onion, dill and chives.
4
Transfer hot seafood to bowl with vinaigrette, toss to coat well. Serve warm on lettuce lined plates.